公开(公告)号：US06797854B1

公开(公告)日：2004-09-28

申请号：US08499442

申请日：1995-07-06

申请人： Gérard Jochem

发明人： Gérard Jochem

IPC分类号： C07C712

CPC分类号： B01D53/261 ,  C10L3/00

摘要： The invention relates to a process for drying a gaseous or liquid mixture by passing the said mixture into an adsorber, characterized in that the water adsorption equilibrium zone of the adsorber comprises an upstream alumina zone and a downstream molecular sieve zone.

摘要翻译： 本发明涉及通过将所述混合物通入吸附器来干燥气态或液体混合物的方法，其特征在于吸附器的吸水平衡区包括上游氧化铝区和下游分子筛区。

公开(公告)号：US06784334B2

公开(公告)日：2004-08-31

申请号：US09935658

申请日：2001-08-24

申请人： Elsa Jolimaitre ,  Olivier Ducreux

发明人： Elsa Jolimaitre ,  Olivier Ducreux

IPC分类号： C07C712

CPC分类号： C10G67/06 ,  C10G25/03

摘要： A process for separating multibranched paraffins comprised in a hydrocarbon feed comprising hydrocarbons containing 5 to 8 carbon atoms per molecule comprises a separation unit functioning by adsorption and contains at least one zeolitic adsorbent with a mixed structure with principal channels with openings defined by a ring containing 10 oxygen atoms and secondary channels with openings defined by a ring of at least 12 oxygen atoms, the secondary channels only being accessible to the feed to be separated via the principal channels. Particular zeolitic adsorbents of the invention are zeolites with structure types EUO, NES and MWW. NU-85 and NU-86 zeolites are also particularly suitable for carrying out the process of the invention.

摘要翻译： 用于分离包含在包含每个分子含有5至8个碳原子的烃的烃原料的烃进料中的方法包括分离单元，其通过吸附而起作用，并且包含至少一种具有主要通道的混合结构的沸石吸附剂，其中开口由含有10 氧原子和具有由至少12个氧原子的环限定的开口的次级通道，次级通道仅可通过主通道分离进料。 本发明的特定的沸石吸附剂是具有结构类型为EUO，NES和MWW的沸石。 NU-85和NU-86沸石也特别适用于实施本发明的方法。

公开(公告)号：US06281406B1

公开(公告)日：2001-08-28

申请号：US09540912

申请日：2000-03-31

申请人： John J. Cain

发明人： John J. Cain

IPC分类号： C07C712

CPC分类号： C07C7/13 ,  C07C15/08

摘要： An adsorption process for the recovery of paraxylene from mixed xylenes using a molecular sieve adsorbent comprising SSZ-25, MCM-22, PSH-3, ERB-1, or ITQ-1. A preferred desorbent for the process is benzene. A hybrid adsorption/crystallization PX purification process is also described using the molecular sieve adsorbent.

摘要翻译： 使用包含SSZ-25，MCM-22，PSH-3，ERB-1或ITQ-1的分子筛吸附剂从混合二甲苯中回收对二甲苯的吸附方法。 用于该方法的优选的脱附剂是苯。 使用分子筛吸附剂也描述了混合吸附/结晶PX纯化方法。

公开(公告)号：US06274784B1

公开(公告)日：2001-08-14

申请号：US09430893

申请日：1999-11-01

申请人： Maureen L. Bricker ,  Charles P. McGonegal ,  Herman A. Zinnen

发明人： Maureen L. Bricker ,  Charles P. McGonegal ,  Herman A. Zinnen

IPC分类号： C07C712

CPC分类号： C07C6/126 ,  C07C15/067 ,  C07C2521/06 ,  C07C2529/08 ,  C07C2529/18 ,  C07C2529/40 ,  C07C2529/70

摘要： A process for separating at least one C8 alkylaromatic hydrocarbon from a mixture containing at least one C8 alkylaromatic hydrocarbon and at least one C9 or C10 alkylaromatic hydrocarbon using zeolite Y or zeolite Y ion exchanged with a metal selected from the group consisting of calcium, sodium, strontium, a Group IB element, a Group VIII element and mixtures thereof.

摘要翻译： 一种使用沸石Y或与选自以下的金属离子交换的沸石Y从含有至少一种C 8烷基芳族烃和至少一种C 8或C 10烷基芳烃的混合物中分离至少一种C 8烷基芳烃的方法，所述金属选自钙，钠， 锶，IB族元素，VIII族元素及其混合物。

公开(公告)号：US06706938B2

公开(公告)日：2004-03-16

申请号：US10099780

申请日：2002-03-15

申请人： Cara M. Roeseler ,  Santi Kulprathipanja ,  James E. Rekoske

发明人： Cara M. Roeseler ,  Santi Kulprathipanja ,  James E. Rekoske

IPC分类号： C07C712

CPC分类号： C07C7/13 ,  C07C15/08

摘要： The performance of an adsorptive separation process recovering para-xylene from a C8 aromatic hydrocarbon feed mixture is improved by operating the process at higher desorbent purity. The improved performance allows for tradeoffs in other operating parameters and rates or improved product rates. The process preferably employs a barium and potassium exchanged zeolitic molecular sieve as the adsorbent and toluene as the desorbent.

摘要翻译： 通过以更高的解吸附剂纯度操作该方法，可以改善从C8芳族烃进料混合物中回收对二甲苯的吸附分离方法的性能。 改进的性能允许在其他操作参数和速率或改进的产品率中进行权衡。 该方法优选使用钡和钾交换的沸石分子筛作为吸附剂，甲苯作为解吸剂。

公开(公告)号：US06407305B1

公开(公告)日：2002-06-18

申请号：US09671219

申请日：2000-09-27

申请人： Stephen W. Sohn

发明人： Stephen W. Sohn

IPC分类号： C07C712

CPC分类号： C10G25/00 ,  C07C7/005 ,  C07C7/12 ,  C07C9/00

摘要： Two separate paraffinic hydrocarbon products, such as normal and monomethyl branched C10-C23 paraffins, are recovered from a mixture comprising the product hydrocarbons and many other hydrocarbons in a process employing two adsorptive separation zones in series. A single desorbent comprising a light paraffin is used in both zones and recovered in a single system, thus reducing capital and operating costs. The recovered paraffinic hydrocarbons may then be dehydrogenated and reacted with benzene to form alkylaromatic hydrocarbons useful as a detergent precursor.

摘要翻译： 在使用两个串联的吸附分离区的方法中，从包含产物烃和许多其它烃的混合物中回收两种分离的链烷烃产物，例如正构和单甲基支链C10-C23链烷烃。 在两个区域中使用包含轻质石蜡的单一解吸剂，并在单一系统中回收，从而降低资本和运行成本。 然后可以将回收的链烷烃脱氢并与苯反应形成可用作洗涤剂前体的烷基芳族烃。

公开(公告)号：US06222088B1

公开(公告)日：2001-04-24

申请号：US09406430

申请日：1999-09-27

申请人： Santi Kulprathipanja

发明人： Santi Kulprathipanja

IPC分类号： C07C712

CPC分类号： C11D11/04 ,  C07C2/76 ,  C07C7/13 ,  C07C15/00 ,  C11D1/14 ,  C11D1/29 ,  C07C9/00

摘要： Monomethyl branched C10-C15 paraffins or olefins are recovered from a mixture comprising other nonnormal hydrocarbons such as di-isoparaffins, di-isoolefins, naphthenes and aromatics by adsorptive separation in a process which includes a prepulse step. In the prepulse step nonnormal hydrocarbons which are readily separated from the product is passed into the adsorbent bed immediately before or with the feed stream. This increases the selectivity of the system and allows for easier separation of the desired hydrocarbons. The recovered monomethyl hydrocarbons may then be used to form a monomethyl branched alkylaromatic hydrocarbon useful as a detergent precursor.

摘要翻译： 在包括预脉冲步骤的过程中，通过吸附分离从包含其它非正常烃如二异链烷烃，二异戊烯，环烷烃和芳族化合物的混合物中回收单甲基支链C10-C15烷烃或烯烃。 在预脉冲步骤中，容易与产物分离的非常规烃在紧邻进料流之前或之后进入吸附剂床。 这增加了系统的选择性，并且允许更容易地分离所需的烃。 然后可以使用回收的单甲基烃形成可用作洗涤剂前体的单甲基支链烷基芳族烃。

公开(公告)号：US06706939B2

公开(公告)日：2004-03-16

申请号：US10193228

申请日：2002-07-12

申请人： Noboru Nakao ,  Koji Yamamoto ,  Masahiro Motoyuki

发明人： Noboru Nakao ,  Koji Yamamoto ,  Masahiro Motoyuki

IPC分类号： C07C712

CPC分类号： C07C7/13 ,  C07C15/24

摘要： A method for concentrating 2,6-dimethylnaphthalene in a dimethylnaphthalene isomer mixture includes supplying the dimethylnaphthalene isomer mixture to an adsorption column packed with Y-type zeolite. In this instance, by setting the value derived from the expression (u1/3/&egr;)d−5/3 at 14 (m5/3 s−1/3 kg−1) or more, the concentration ratio of 2,6-dimethylnaphthalene to 2,7-dimethylnaphthalene can be 2.0 or more. u here represents the linear velocity (m/s) of the dimethylnaphthalene isomer mixture supplied to an adsorption column, &egr; represents the packing density (kg/m3) of Y-type zeolite, and d represents the grain size (m) of the Y-type zeolite.

摘要翻译： 将2,6-二甲基萘浓缩在二甲基萘异构体混合物中的方法包括将二甲基萘异构体混合物供应到填充有Y型沸石的吸附塔上。 在这种情况下，通过在14（m <5/3> s <-1 / 3> kg -1）处设定从表达式（u <1/3 /ε）d <-5/3>导出的值 ）以上时，2,6-二甲基萘与2,7-二甲基萘的浓度比可以为2.0以上。 这里表示供给吸附塔的二甲基萘异构体混合物的线速度（m / s），ε表示Y型沸石的填充密度（kg / m 3），d表示粒径（μm） 的Y型沸石。

公开(公告)号：US06627783B2

公开(公告)日：2003-09-30

申请号：US09902198

申请日：2001-07-10

申请人： Ruth Ann Doyle ,  Jeffrey T. Miller ,  Kevin A. Kunz

发明人： Ruth Ann Doyle ,  Jeffrey T. Miller ,  Kevin A. Kunz

IPC分类号： C07C712

CPC分类号： C07C15/08 ,  C07C7/13 ,  C07C7/14

摘要： A pressure swing adsorption process to separate para-xylene and ethylbenzene from C8 aromatics uses a para-selective adsorbent, preferably a non-acidic, medium pore molecular sieve of the MFI structure type, and is operated isothermally in the vapor phase at elevated temperatures and pressures. A fixed bed of adsorbent is saturated with para-xylene and ethylbenzene, which are preferentially adsorbed, then the feed to the process is stopped. Lowering the partial pressure desorbs the para-xylene and ethylbenzene. The process effluent is rich in para-xylene and ethylbenzene. A stream of non-adsorbed meta-xylene and ortho-xylene may be obtained prior to desorption of para-xylene and ethylbenzene.

摘要翻译： 从C8芳族化合物分离对二甲苯和乙苯的变压吸附方法使用对选择性吸附剂，优选MFI结构类型的非酸性中孔分子筛，并且在升高的温度下在气相中等温运行， 压力。 吸附剂的固定床被对二甲苯和乙苯饱和，优先吸附，然后停止进料。 降低分压使对二甲苯和乙苯解吸。 工艺流程富含对二甲苯和乙苯。 在脱附对二甲苯和乙苯之前可以获得未吸附的间二甲苯和邻二甲苯。

公开(公告)号：US06486375B1

公开(公告)日：2002-11-26

申请号：US09847486

申请日：2001-05-02

申请人： Melissa G. Lenhart ,  Harold L. Dinsmore ,  Scott J. Fox

发明人： Melissa G. Lenhart ,  Harold L. Dinsmore ,  Scott J. Fox

IPC分类号： C07C712

CPC分类号： C07C7/12 ,  C10G5/02

摘要： An improved process for recovering hydrocarbons from an inlet inert gas-hydrocarbon vapor mixture is provided. The inlet mixture is caused to flow through a first bed of solid adsorbent whereby hydrocarbon vapors are adsorbed on the bed and a residue gas stream comprised of substantially hydrocarbon-free inert gas is produced. The hydrocarbon-free inert gas is vented and a second bed of solid adsorbent having hydrocarbon vapors adsorbed thereon is evacuated with an ejector operated by a motive liquid. A major portion of the hydrocarbon vapors is desorbed from the bed and an inert gas and hydrocarbon-rich vapor mixture commingled with the motive liquid is produced. The inert gas and hydrocarbon-rich vapor mixture is separated from the motive liquid and conducted to a point of additional processing or disposal. The flow pattern of the inlet inert gas-hydrocarbon vapor mixture is periodically changed whereby when the bed through which the inlet inert gas-hydrocarbon vapor mixture is flowing becomes loaded, the inlet inert gas-hydrocarbon vapor mixture is caused to flow through the bed which has just been evacuated and the bed loaded with adsorbed hydrocarbon vapors is caused to be regenerated.